Securing Single User Mode in RHEL6

GEEKS !! You have done your RHCE Training and I hope you still remember that how to harden your RHEL6 server. In case your company security policy requires that your RHEL6 server should prompt… Continue reading →

Linux, Love, Learn

Spreading Love for Linux and RHCE beyond boundaries  

Minimum & Maximum UID’s

GEEKS !! Here comes a very small but relevant information about user accounts. Often asked in interviews. We all know that whenever we create user account on Linux machines during your RHCE Training… Continue reading →

nl linux command

GEEKS !! You have learned about wc command during your RHCE Training or Red Hat Linux Training. Here comes a very simple nl command, which can be used to display line numbers against… Continue reading →

whereis, which and whatis

GEEKS!! Here comes a very basic but very useful stuff on ‪whereis, which and whatis commands. These are the commands you had used and learned during your RHCE Training. But learning some more tips… Continue reading →

Date command

Though you have mastered the pretty simple date command during your Red Hat Training days, specially during the first module of RHCE Training. But here is a ready reference for the date command.

Pseudo Terminals

GEEKS !! Lets understand “Pseudo Terminals” in Linux. You would have used your GNOME / KDE desktop environment to open the terminal (using right click -> open terminal) or from the menu options.… Continue reading →

Checking Packages Integrity

GEEKS!! Here comes the kiddos stuff to check your  Linux‬ machine against any ‪intrusion attempts by checking all the installed packages. All commands must be familiar with you as you had used these commands during your ‪RHCE… Continue reading →

inittab explained

GEEKS !! Forgive me this time for taking up /etc/inittab file details here. But trust me, many of you will learn something new about inittab file apart from your knowledge that it control… Continue reading →

Encrypt files using gpg

GEEKS!! I know you have used the gpg keys while in your RHCE Training and the topic also comes in RHCSS, RH333 objectives. But there you have used the gpg with the signature… Continue reading →